Author
- Jean Germain2
- Jean de Meun2
- Johann Herolt2
- Johannes Nider2
- John Burgh2
- John Felton2
- John of Genoa2
- John of Wales2
- Jordan von Quedlinburg2
- Josephus2
- Leo I2
- Lorenzo Valla2
- Lucan2
- Moses ben Jacob of Coucy2
- Mundhirī2
- Muḥammad ibn Abī Bakr Khabīṣī2
- Muḥammad ibn ʻAbd Allāh Khatib Al-Tabrizi2
- Nicholas Trivet2
- Nicholas of Gorran2
- Nikolaus von Dinkelsbühl2